What Is Trigger Finger?
Reviewed: Dr. Gromatzky
6. Disease Process
For a finger to bend, a tendon slides through a sheath that provides a lubricated surrounding to allow for this movement. The tendon sheath is attached to the bones in the finger such that it also provides a pulley system for the tendon as it aids the finger to bend inward.
If, however, inflammation or swelling occurs, the easy movement of the tendons will be affected. This means that the tendon can no longer slide easily through the sheath. By extension, the finger can no longer bend as easily. Depending on the amount of inflammation or swelling, pain, popping, or locking may develop. This condition is called trigger finger.
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